{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX14945EWE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX14945EWE","canonicalUrl":"https://icboms.com/analog-devices/MAX14945EWE","factsUrl":"https://icboms.com/api/mcp/products/MAX14945EWE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX14945EWE+, isolated RS-422/RS-485 transceiver, capacitive coupling, 500kbps data rate, 2750Vrms isolation, dual supply 1.71V-5.5V / 4.5V-5.5V, 3-channel unidirectional, -40°C to 85°C, 16-SOIC.","salesMarkdown":"The Maxim Integrated MAX14945EWE+ is a galvanically isolated RS-422/RS-485 transceiver that uses capacitive coupling to achieve 2750Vrms of isolation between the bus side and the logic side. It's a 3-channel device with two inputs on side 1 and one on side 2, configured as unidirectional channels. The part handles data rates up to 500kbps, which covers the vast majority of industrial fieldbus and building-automation RS-485 links. The dual-supply arrangement — 1.71V to 5.5V on the logic side and 4.5V to 5.5V on the bus side — lets you interface a 3.3V or 1.8V UART directly to a 5V RS-485 bus without a level shifter. ## 500kbps data rate and common-mode transient immunity — the bus-performance specs that matter The maximum data rate is 500kbps. The typical common-mode transient immunity is 35kV/µs. ## Package and supply — what the layout engineer needs to know The MAX14945EWE+ comes in a 16-pin SOIC wide-body package (0.295\" body width, 7.50mm), which is a standard footprint that's hand-solderable with a fine-tip iron and easy to inspect. Surface-mount only. The supply pins are split: VCC1 (logic side) accepts 1.71V to 5.5V, and VCC2 (bus side) needs 4.5V to 5.5V. No isolated power supply is integrated — you'll need a separate DC-DC converter or an isolated module to power VCC2 if the bus side doesn't share a local 5V rail. ## Active lifecycle — no obsolescence worry for production It's ROHS3 compliant. For a production BOM line, this means no last-time-buy clock ticking and no forced redesign in the near term.","metaTitle":"MAX14945EWE+ Isolated RS-422/RS-485 Transceiver, 500kbps","metaDescription":"MAX14945EWE+ isolated RS-422/RS-485 transceiver with 2750Vrms isolation, 500kbps data rate, capacitive coupling, dual supply 1.71V-5.5V/4.5V-5.5V, -40°C to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"RS422, RS485","Package":"Tube","Data Rate":"500kbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"1.71V ~ 5.5V, 4.5V ~ 5.5V","Number of Channels":"3","Voltage - Isolation":"2750Vrms","Operating Temperature":"-40°C ~ 85°C","Inputs - Side 1/Side 2":"2/1","Supplier Device Package":"16-SOIC","Common Mode Transient Immunity (Min)":"35kV/µs (Typ)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.21","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.21000","currency":"USD"},{"qty":10,"price":"$9.22100","currency":"USD"},{"qty":25,"price":"$8.79240","currency":"USD"},{"qty":100,"price":"$7.63440","currency":"USD"},{"qty":250,"price":"$7.29128","currency":"USD"},{"qty":500,"price":"$6.64794","currency":"USD"},{"qty":1000,"price":"$6.43348","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX14945.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum data rate for MAX14945EWE+?","answer":"The maximum data rate is 500kbps. This is the differential bus signaling speed; the part is well-suited for fieldbus protocols like Modbus RTU at 115.2kbps or 250kbps."},{"question":"Is MAX14945EWE+ a full-duplex RS-485 transceiver?","answer":"The MAX14945EWE+ has three unidirectional channels (two inputs on side 1, one on side 2). This configuration supports full-duplex RS-422 and can be wired for full-duplex RS-485 with separate transmit and receive pairs, but it does not include the driver-enable logic of a half-duplex transceiver — you manage the bus direction externally."},{"question":"Can I use MAX14945EWE+ with a 3.3V supply on one side?","answer":"Yes. The logic-side supply (VCC1) accepts 1.71V to 5.5V, so a 3.3V rail works directly. The bus-side supply (VCC2) requires 4.5V to 5.5V, so that side must be at 5V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX14945EWE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX14945EWE when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}